al 3 co coated al 2 o 3 Nanoparticle-reinforced aluminum matrix composite material and preparation method thereof

Abstract

The invention provides an Al 3 Co coated Al 2 o 3 Nanoparticle reinforced aluminum matrix composite material and preparation method thereof, in Al 2 o 3 Nano-reinforced particles are coated with a layer of Al 3 The Co alloy phase is prepared by adding nanoscale Co to the pure aluminum or aluminum alloy matrix. 3 o 4 Powder, Al by melt direct reaction method 3 Co coated Al 2 o 3 Nanoparticle-reinforced aluminum matrix composites for controllable Al 2 o 3 The particle size is at the nanoscale, and the preferred overall fraction of the particle-reinforced phase in the composite material is 1vol.% to 2vol.%; the composite material prepared by the present invention has low cost, high strength, high wear resistance, low thermal expansion and low residual stress It is a new type of aluminum matrix composite material.

Description

Technical field The invention relates to the field of composite materials, belongs to the field of new material preparation, and particularly relates to an Al 3 Co coated Al 2 O 3 Nano particle reinforced aluminum-based composite material and preparation method thereof. Background technique The aluminum matrix composite material combines the advantages of the aluminum matrix and the composite phase. It has high strength, high modulus, high wear resistance, low expansion and other excellent performance. It has attracted much attention in the research of new materials. It has the characteristics of good uniformity, good particle rounding, uniform dispersion, and uniform stress dispersion when external force is applied. Therefore, the research on new particle-reinforced aluminum matrix composites has attracted much attention in the industry. Composite materials with nano-alumina particles as the reinforcing phase have problems such as difficulty in nano-particle dispersion, easy c...

AI Technical Summary

Problems solved by technology

Composite materials that use nano-alumina particles as a reinforcing phase have problems such as difficulty in dispersing nanoparticles and easy cluster growth that affect material properties. Therefore, it is necessary to develop a method that can improve the dispersion of alumina particles, wettability and matrix interface A new reaction system to control the growth of alumina particles to prepare high-performance particle-reinforced composites

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